ab
Shape of the object, ab=1 Sphere, ab!=1 Ellipsoid
e
eccentric of the orbit
radius
Radius for sphere (ab=1), or Semi-major axis for Ellipsoid (ab!=1)
period
data.frame 1*3 c(Period.Rotate, Period.Orbit, Period.Synodic)
Inclination
Inclination.
CenterObject
Central Object.